Dehorning apparatus.



G. A. WINDUS.

DEHORNING APPARATUS.

APPLIOATION FILED FEB. 20, 1912.

1,067,451 Patented July 15, 1913.

QR ir mco .wo 34mm" For GERALD ARTHUR WINDUS, or BUENOS AIBES,ARGENTINA.

IDEHOR-NING APPARATUS.

Specification of Letters Patent.

Patented July 15,1913.

Application filed. February 20, 1912. Serial No. 678,769.

To all 107mm it may concern:

Be it known that I, GERALD ARTHUR TVILDUS, a subject of the King ofGreat Britain and Ireland, residing at No. 7&5 Calle Tucuman, BuenosAires, Argentina, have invented a new Dehorning Apparatus, of which thefollowing is a specification.

The present invention relates to a novel dehorning apparatus whichoffers the advantage of requiring only a small amount of force for itsoperation and which cuts off the horn with a concave cut, as near aspossible to its root.

As will hereinafter be more fully explained, the apparatus essentiallyconsists of a casing or head of peculiar shape in the interior of whichis mounted the whole of the mechanism. Two lever arms, connectedtogether in their movement and the fulcrum of which is in the interiorof said casing, form at their lower end, a toothed sector engaging witha rack wherein is fixed the respective knife. The knives are ofsemicircular section and owing to the action of the said racks andsectors, they effect the cut by simultaneously advancing one toward theother until their cutting edges meet. in this arrangement, both knivesform a right angle and the union of both coincides with the longitudinalcenter of the apparatus and with the bisecting line of said angle.

For the clearer understanding of this invention, this specification isaccompanied by detailed drawings, wherein:

Figure 1 represents a partial section of a dehorning apparatusconstructed in accordance with my invention. Figs. 2 and 3 respectivelyshow a side elevation and a plan view of the same. Fig. 4 shows a knifeon the line A-B of Fig. 1.

In said drawings, 1 is the casing in which by means of the studs 2 arecentered the lever arms 3 which at their lower end form the toothedsectors a which engage with the racks 5 fixed at the rear extension ofthe knives 6, guided in their movement by the lower parts of the casingand the lateral grooves 7.

The lever arms 3 are connected together in their movement in such a waythat one of them may not be moved without the other one efiecting thesame movement, although in the inverse direction. This is owing to thefact that each lever arm is provided with two rods 8, the rods of onearm being jointed to those of the other and the central jointing stud 9thereof is guided in its movement by the openings 10 formed one at eachside of the casing.

At the lower part of the casing a strengthening ring 11 is providedwhich serves at the same time for guiding the apparatus in order thatthe same may be easily placed in the position most convenient foreifecting the out. An opening formed at each side of the casing andwhich at its upper part is limited by a heading or boss 12 formed in thesame, permits of the ready and total insertion of the horn.

The operation of the apparatus is as follows: The arms 3 being in theposition shown with dotted lines in Fig. 1, the knives reach theirposition of maximum separation and allow of the ring 11 being insertedup to the root of the horn. After placing the apparatus onto the horn,the arms 3 are separated as shown at Fig. 1, which movement will causethe sectors 1 to move the rack 5 and in consequence the knives 6 willapproach each other until their respective cutting edges meet. As willbe seen, the sectional shape of the knives and the movement in rightangle which one of them effects with regard to the other, will determinea concave cut, that is to say, a cut of a greater depth at the center ofthe horn than at the edge or superficial rooting of the same. Thelateral apertures and the en largements 12 as well as the separationbetween the toothed sectors 1 permit of the horn being well insertedinto the apparatus. This latter point is of much importance, since itallows of the out being realized at the very same root of the horn whichis thus being extirpatcd.

Having now described and ascertained the nature of my said invention andin what manner the same is to be performed, I declare that what I claim,is:

In a dehorning apparatus, a casing comprising two parallel side walls,each having an elongated opening through which a horn may project, aguide ring on the casing at the lower ends of said openings adapted toembrace a horn, semi-circular knives having their cutting edgesperpendicular to the plane of the ring and slidably mounted in thecasing between the side walls at rightangles to each other, knifeoperating levers pivoted on said side walls on each side of the openingsand having toothed sectors on their loWer bent ends engaging racks onthe In testimony whereof I aflix my signature knives, whereby the latterare moved in presence of two Witnesses.

through the guide-ring and their cutting GFRAID ARTHUR WINDUQ edgesbrought into engagement, and means J J 5 for producing simultaneousmovement of Witnesses:

the levers arranged above the elongated ANTONIO L. BnLLo, openmgs.DOCTOR R. HEFFTER.

Copies of this patent may be obtained for five e ents each, byaddressing the Commissioner of Patents. Washington, D. C.

